Vocabulary
What do you call objects that do not allow any light to pass through them?
Opaque objects
What makes a pencil look broken when it is placed in a cup of water?
Refraction
Why do you see lightning before you hear thunder?
Light travels faster than sound.
What color coat would help you feel warmer on a cold sunny day- white or black?
Black because it absorbs the light energy and transforms it to heat energy.
What do you call objects that allow some light to pass through them?
Translucent objects
Explain an example of when light reflects and an example of when light refracts.
Reflect- mirror, reflectors, etc. Refract- straw in water, arm in pool, etc.
Explain why it feels cooler when you are sitting in the shade on a hot sunny day.
The sunlight does not hit you so you are not absorbing light energy.
Give three examples of transparent objects.
Answers may vary. For example: glass, water, plastic wrap
What is the term for when light waves bend when passing from one medium to another?
Refraction
Light can travel through objects, called TRANSMISSION. It can also do 3 different things. What are they?
Light can be reflected, refracted, and absorbed.
Explain why a shadow appears on the screen when I place my hand in front of it.
My hand blocks the sun from hitting the whiteboard
List the colors of the rainbow in order.
Red, orange, yellow, green, blue, indigo, violet
What is the term for making something appear larger?
Magnify
What tool can be used to separate white light into all colors of visible light?
A prism
Explain what glasses do to the light.
Refract the image to make it clearer.
I shine a light through an object. The light scatters after being transmitted through the object. What type of object is it?
Translucent
You are looking at a banana. Explain which colors are being absorbed and reflected.
Yellow is reflected and ROGBIV are absorbed
What is a medium?
Something that light travels through. For example solid, liquid, gas are all mediums/matter.
What word means "the quantity of visible light emitted?"
Intensity
You are underwater, wearing goggles. You see a plastic torpedo on the bottom of the pool. The light reflected off the torpedo has to travel through three media in order to get to your eye. List the media in order.
1. water 2. plastic on goggles 3. air
Explain what the reason why the girl in the picture is using the aluminum board while tanning.(http://images.inmagine.com/400nwm/iris/stockconnection-076/ptg01618924.jpg)
The aluminum board allows light to be reflected onto her face
You are looking at a stop sign. It is RED and WHITE. It is on a BLACK pole. What colors are being reflected into your eyes in each section? What are being absorbed?
On the red spots - red is reflected and OYGBIV is absorbed. On the white spots - all the colors are being reflected back. On the black pole, no color is reflected back, it is all absorbed.